30.0 ml of 0.20 m agno, are added to 100.0 ml of 0.10 m hci in a thermally nsulated vessel. the following reaction takes place: ag (aq)+ cl (aq)agci (s) the two solutions were initially at 22.00°c and the final temperature was 22.80 c calculate the heat of this reaction in k. jimol of agci formed. assume a combined mass of 120 g and a specific heat capacity of 4.18 jk-'g for the reaction mixture.

Answer : The heat of this reaction of AgCI formed will be, 66.88 KJ

Explanation :

First we have to calculate the heat of the reaction.

where,

q = amount of heat = ?

= specific heat capacity =

m = mass of substance = 120 g

= final temperature =

= initial temperature =

Now put all the given values in the above formula, we get:

Now we have to calculate the number of moles of and .

Now we have to calculate the limiting reactant.

The balanced chemical reaction will be,

As, 1 mole of react with 1 mole of HCl

So, 0.006 mole of react with 0.006 mole of HCl

From this we conclude that, is an excess reagent because the given moles are greater than the required moles and is a limiting reagent and it limits the formation of product.

Now we have to calculate the moles of AgCl.

The given balanced reaction is,

From this we conclude that,

1 mole of react with 1 mole to produce 1 mole of

0.006 mole of react with 0.006 mole to produce 0.006 mole of

Now we have to calculate the heat of this reaction of AgCI formed.

As, 0.006 mole of AgCl produced the heat = 401.28 J

So, 1 mole of AgCl produced the heat =

Therefore, the heat of this reaction of AgCI formed will be, 66.88 KJ

they are both synthetic elements

explanation:

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